Upset' Tony La Russa defends unwritten rules, calls out own player after Yermín Mercedes' 3-0 home run - CBSSports.com
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Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules' - SBNation.com
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MLB players blast baseball's 'unwritten rules' following Fernando Tatis Jr.'s 3-0 grand slam - CBSSports.com
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